package com.gdcn.zb.sys;

import java.security.MessageDigest;

public class Security {      
	 public final static String MD5(String s) {      
	  char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',      
	    'a', 'b', 'c', 'd', 'e', 'f' };      
	  try {      
	   byte[] strTemp = s.getBytes();      
	   MessageDigest mdTemp = MessageDigest.getInstance("MD5");      
	   mdTemp.update(strTemp);      
	   byte[] md = mdTemp.digest();      
	   int j = md.length;      
	   char str[] = new char[j * 2];      
	   int k = 0;      
	   for (int i = 0; i < j; i++) {      
	    byte byte0 = md[i];      
	    str[k++] = hexDigits[byte0 >>> 4 & 0xf];      
	    str[k++] = hexDigits[byte0 & 0xf];      
	   }      
	   return new String(str);      
	  } catch (Exception e) {      
	   return null;      
	  }      
	 }      
	     
	 public static void main(String[] args) {      
	  // MD5_Test aa = new MD5_Test();      
	  System.out.print(Security.MD5("888888"));      
	 }      
	}     
	  
	      

